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Preparation of Copolymer 1: Styrene (2.24 g, 21.6 mmol, 2, 2-phenylallyloxy)methyl]oxirane (630 mg, 3.32 mmol, tetraethyleneglycol mono-2-phenyl-2-propenyl ether (1.03 g, 3.32 mmol, dicyclohexyl-2-[4′-(4- styrylmethoxy)phenyl]phenylphosphine (2.40 g, 4.97 mmol) and 2,2′-azobis(isobutyronitrile, 54.4 mg, 0.332 mmol) were mixed in CHCl3 (4.2 mL, The mixture was stirred at reflux for 27 h under argon and was then cooled to r.t. The resulting polymer solution was poured slowly into hot deoxygenated hexane and the precipitated polymer was collected by filtration and washed with hexane. The polymer so obtained was dissolved in CHCl3, and the resulting solution was poured slowly into MeCN. The precipitated polymer was filtered and washed with MeCN several times and dried in vacuo to afford the desired copolymer 1 (3.67 g, 58, The molar ratio of the monomer was determined by 1H NMR analysis {styrene-2, 2-phenylallyloxy)methyl
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2O and MeOH and was then dried in vacuo. The catalyst was reused without any other purification step.
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